<template>
	<view style="" class="zcq">
		<view class="danmu-li" v-for="(item,index) in listData" :class="item.type" :style="[item.style]" :key="index">
			<view class="danmu-inner">
				<view class="user-box">
					<view class="user-img">
						<view class="img-box">
							<image :src="item.headimg"></image>
						</view>
					</view>
					<!-- <view class="user-text cl1">
						人名
					</view> -->
					<view class="user-status cl1">
						{{item.item}}
						<!-- <span :style="'color:'+ item.color"> {{item.title}}</span> -->

					</view>
				</view>
			</view>
		</view>
	</view>
</template>
<script>
	export default {
		props: {
			//rightToLeft leftToRight leftBottom
			type: {
				type: String,
				default: 'rightToLeft'
			},
			minTime: {
				type: Number,
				default: 5
			},
			maxTime: {
				type: Number,
				default: 10
			},
			minTop: {
				type: Number,
				default: 0
			},
			maxTop: {
				type: Number,
				default: 50
			},
			hrackH: { //轨道高度
				type: Number,
				default: 40
			},
			noStacked: { //不允许堆叠(暂不可用)
				type: Array,
				default () {
					return []
				}
			}
		},
		data() {
			return {
				listData: []
			}
		},
		mounted() {
			this.hrackNum = Math.floor((this.maxTop - this.minTop) / this.hrackH);
		},
		methods: {
			add(obj) {
				let data = {
					item: obj.item,
					title: obj.title,
					color: obj.color,
					id: Date.parse(new Date()),
					time: Math.ceil(Math.floor(Math.random() * (this.maxTime - this.minTime + 1) + this.minTime)),
					type: this.type,
					headimg: obj.headimg
				}
				if (this.type === 'leftBottom') {
					let objData = {
						item: data.item,
						title: data.title,
						color: data.color,
						type: 'leftBottomEnter',
						style: {
							transition: `all 0.5s`,
							animationDuration: `0.5s`,
							transform: `translateX(0%)`,
							bottom: `${this.minTop}px`
						}
					}
					let listLen = this.listData.length;
					let hrackNum = this.hrackNum;
					for (let i in this.listData) {
						if (this.listData[i].status === 'reuse') { //重用
							this.$set(this.listData, i, objData);
						} else if (this.listData[i].status === 'reset') { //重置
							this.listData[i].style.transition = 'none';
							this.listData[i].style.bottom = 0;
							this.listData[i].status = 'reuse';
						} else if (this.listData[i].status === 'recycle') { //回收
							this.listData[i].type = 'leftBottomExit';
							this.listData[i].status = 'reset';
						} else {
							this.listData[i].style.bottom = parseInt(this.listData[i].style.bottom) + this.hrackH + 'px';
						}
						if (parseInt(this.listData[i].style.bottom) >= (this.maxTop - this.hrackH) && this.listData[i]
							.status !== 'reset') { //需要回收
							this.listData[i].status = 'recycle';
						}
					}
					if (listLen < hrackNum + 2) {
						this.listData.push(objData);
					}
				} else if (this.type === 'rightToLeft' || this.type === 'leftToRight') {
					let objData = this.horStacked(data);
					for (let i in this.listData) {
						if (this.listData[i].delTime <= Date.parse(new Date())) {
							this.repaint(i, objData.type);
							objData.type = '';
							this.$set(this.listData, i, objData);
							return
						}
					}
					this.listData.push(objData);
				}
			},
			horStacked(data) {
				// console.log(data)
				return {
					item: data.item,
					type: this.type,
					title: data.title,
					color: data.color,
					style: {
						animationDuration: `${data.time}s`,
						top: `${Math.ceil(Math.random() * (this.maxTop - this.minTop + 1) + this.minTop)}px`,
						opacity: 1
					},
					delTime: Date.parse(new Date()) + data.time * 1200,
					headimg: data.headimg
				}
			},
			repaint(index, type) {
				setTimeout(() => {
					this.listData[index].type = type;
				}, 100)
			}
		}

	}
</script>
<style>

</style>
<style lang="scss">
	.zcq {

		top: 0rpx;
		z-index: 99;
		left: 0rpx;
		box-sizing: border-box;
		// font-family: 'zcq';
		// border: 1px solid red;
		position: absolute;
		width: 750rpx;
		height: 300rpx;
		pointer-events: none;

	}

	@keyframes leftBottomEnter {
		0% {
			transform: translateY(100%);
			opacity: 0;
		}

		100% {
			transform: translateY(0%);
			opacity: 1;
		}
	}

	@keyframes leftBottomExit {
		0% {
			transform: translateY(0%);
			opacity: 1;
		}

		100% {
			transform: translateY(-200%);
			opacity: 0;
		}
	}

	@keyframes leftToRight {
		0% {
			transform: translateX(-100%);
			// opacity: 0;
		}

		100% {
			transform: translateX(100%);
			// opacity: 1;
		}
	}

	@keyframes rightToLeft {
		0% {
			transform: translateX(100%);
			opacity: 0.5;
		}

		100% {
			transform: translateX(-100%);
			opacity: 1;
		}
	}

	.danmu-li {
		position: absolute;
		width: 100%;
		opacity: 0;
		transform: translateX(100%);
		animation-timing-function: linear;

		&.leftBottomEnter {
			animation-name: leftBottomEnter;
		}

		&.leftBottomExit {
			animation-name: leftBottomExit;
			animation-fill-mode: forwards;
		}

		&.rightToLeft {
			animation-name: rightToLeft;
		}

		&.leftToRight {
			animation-name: leftToRight;
		}

		.danmu-inner {
			display: inline-block;

			.user-box {
				display: flex;
				padding: 3rpx 40rpx 3rpx 10rpx;
				border: 1px solid #CCCCCC;
				background: linear-gradient(90deg, #3F0F87 0%, rgba(124,93,171,0) 100%);
				border-radius: 32rpx;
				align-items: center;

				.user-img {
					.img-box {
						display: flex;

						image {
							width: 58rpx;
							height: 58rpx;
							background: rgba(55, 55, 55, 1);
							border-radius: 50%;
						}
					}
				}

				.user-status {
					margin-left: 10rpx;
					white-space: nowrap;
					font-size: 28rpx;
					font-weight: 400;
					color: rgba(255, 255, 255, 1);
				}

				.user-text {
					margin-left: 10rpx;
					// white-space: nowrap;
					font-size: 28rpx;
					font-weight: 400;
					width: 80rpx;
					color: rgba(255, 255, 255, 1);
				}
			}
		}
	}
</style>
